CN109263030B - Blow molding machine for processing PE film - Google Patents
Blow molding machine for processing PE film Download PDFInfo
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- CN109263030B CN109263030B CN201811378029.8A CN201811378029A CN109263030B CN 109263030 B CN109263030 B CN 109263030B CN 201811378029 A CN201811378029 A CN 201811378029A CN 109263030 B CN109263030 B CN 109263030B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
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- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The invention relates to the field of plastic film production, in particular to a blow molding machine for processing a PE film, which comprises a rack, a machine head, a herringbone plate, a traction roller and a material lifting device, wherein the material lifting device comprises a material lifting roller, a left material lifting block and a right material lifting block which are symmetrical in structure, the left material lifting block and the right material lifting block are respectively connected with the material lifting roller through a traction rope, the left material lifting block and the right material lifting block are hung above the machine head through the traction rope, closed containing cavities are respectively arranged in the left material lifting block and the right material lifting block, pistons are connected in the closed containing cavities in a sliding manner, and the closed containing cavities are divided into rod cavities and rodless cavities by the pistons; the frame is fixedly connected with a piston rod, the piston rod penetrates into a rod cavity and abuts against the piston, the sliding direction of the piston is perpendicular to the central axis of the traction roller, air pipes are arranged on the peripheries of the closed containing cavities of the left material extracting block and the right material extracting block, and the air pipes are communicated with the rodless cavity. The invention is used for solving the problem that the personal safety is easily endangered by manual material sealing, material lifting and roller feeding in the PE film forming process in the prior art.
Description
Technical Field
The invention relates to the field of plastic film production, in particular to a blow molding machine for processing a PE film.
Background
With the progress of human science and technology, most paper packages have been replaced by plastic films as packages, the demand of the films is huge, most of the demand of the plastic films is occupied by PE films as food bags, blow molding is generally adopted for production of the PE films, in the molding process, as shown in figure 1, a PE raw material is firstly melted and plasticized in an extruder 19, the melted raw material is extruded into a thin-wall pipe through a right-angle head 2 of a blow molding machine, then the thin-wall pipe is blown by compressed air to form a film pipe 18, the film pipe 18 is cooled and shaped through an air ring, the shaped film pipe 18 is flattened through a herringbone plate 3 to form a jointed film, and finally the film is drawn to a take-up roller 20 through a drawing roller 4 to be taken up to form a film product.
However, the prior art still has the following problems with respect to the blow molding production of PE films:
firstly, before the thin-walled tube becomes the thin-walled tube, the top of the thin-walled tube needs to be closed so as to facilitate the compressed air to blow the thin-walled tube to form the thin-walled tube, however, at present, the top of the thin-walled tube is closed manually (i.e. manual sealing), the temperature of the head is high, and the process of extruding the thin-walled tube by the head has the danger of jetting out the molten raw material, so the operation danger of manual sealing is adopted.
Secondly, the work of drawing the film tube onto the drawing roller is also manually completed (namely material lifting), but the drawing roller is located at high altitude, and manual work needs to draw the film tube formed by low altitude onto the drawing roller (namely a feeding roller) at high altitude, so that on one hand, the danger of the work from the low altitude to the high altitude is realized, on the other hand, the manual drawing efficiency is low, and the generation efficiency is reduced.
Disclosure of Invention
The invention provides a blow molding machine for processing a PE (polyethylene) film, which aims to solve the problem that in the prior art, the personal safety is easily endangered by manual material sealing, material lifting and roller feeding in the process of forming the PE film.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the blow molding machine for processing the PE film comprises a rack, a machine head, a herringbone plate, a traction roller and a material lifting device, wherein the material lifting device comprises a material lifting roller, a left material lifting block and a right material lifting block which are symmetrical in structure, the traction rope is respectively connected between the left material lifting block and the right material lifting block and the material lifting roller, the left material lifting block and the right material lifting block are hung above the machine head through the traction rope, closed containing cavities are respectively arranged in the left material lifting block and the right material lifting block, pistons are connected in the closed containing cavities in a sliding mode, the closed containing cavities are divided into rod cavities and rodless cavities by the pistons, and the rodless cavities of the left material lifting block and the right material lifting block are close to the central axis of the machine head; the frame is fixedly connected with a piston rod, the piston rod penetrates into a rod cavity and abuts against the piston, the sliding direction of the piston is perpendicular to the central axis of the traction roller, air pipes are arranged on the peripheries of the closed containing cavities of the left material extracting block and the right material extracting block, and the air pipes are communicated with the rodless cavity.
The beneficial effects of the technical scheme are as follows:
first, constantly let in gas in to no pole chamber through the trachea for the pressure increase in no pole chamber, the piston removes in to having the pole chamber, because of the piston rod is fixed, and then force left material extraction piece and right material extraction piece wholly along the position removal near aircraft nose the central axis, left material extraction piece and right material extraction piece move in opposite directions promptly, move the in-process in opposite directions, extrude the film pipe in the middle of the two, realize the automatic material sealing in top of film pipe, compare in the artifical material sealing of prior art, the problem of manual operation crisis life safety has been avoided.
Secondly, the thin-walled tube which is sealed is lifted upwards along with the left material lifting block and the right material lifting block through a traction rope, so that the compressed air is convenient to blow.
And thirdly, the thin film tube which is blown up is lifted to a position close to the traction roller through the traction rope and the material lifting roller, the manual material lifting process is replaced, the condition that workers are endangered in the material lifting process is avoided, and meanwhile, the production efficiency is also improved.
Furthermore, an electromagnet is arranged at the bottom of the rodless cavity in the left material extracting block, a button switch for controlling the electromagnet to be electrified is arranged on the inner wall close to the bottom of the rod cavity, and a ferromagnetic block with ferromagnetic property is arranged at the bottom of the rodless cavity in the right material extracting block.
Has the advantages that: when the volume in the rodless cavity is continuously increased, the piston moves towards the bottom of the rod cavity, when the piston is moved to press the button switch, the electromagnet is electrified to generate magnetic force to attract the ferromagnetic block positioned on the right material lifting block, and the material on the upper part of the thin-walled tube is clamped under the action of the electromagnet and the ferromagnetic block.
Furthermore, dry ice is connected to the traction rope and is located on the tops of the left material extracting block and the right material extracting block.
Has the advantages that: on one hand, the existence of the dry ice enables the length formed by the sealing material to be longer when the sealing material is used for sealing the thin-walled tube, and further ensures the stability of the sealing space of the thin-walled tube in the blowing process; on the other hand, the dry ice is heated and sublimated, and absorbs a large amount of heat when solid is changed into gas, so that the temperature of the surrounding air is quickly reduced, and the existence of the dry ice cools the thin-walled tube of the sealing material; in addition, after the dry ice is sublimated into gas, no residue, no toxicity or peculiar smell exists, and the dry ice can play a role in sterilization.
Furthermore, an air blowing channel is formed in the inner wall close to the bottom of the rodless cavity, a plurality of air blowing holes are formed in the tops of the left material lifting block and the right material lifting block, and the air blowing holes are communicated with the air blowing channel.
Has the advantages that: after the dry ice melts, the film that forms is extruded to the dry ice through the hole of blowing is bloied, under the effect of wind power for the film remains upright state upwards throughout, is favorable to being the roller of feeding on the film is promoted the carry over pinch rolls.
Further, the hauling cable is a steel rope.
Has the advantages that: the steel rope reduces the shaking of the left material lifting block and the right material lifting block in the ascending process, and the accuracy of the feeding roller is ensured.
Further, the steel ropes comprise traction steel ropes and connecting steel ropes, the traction steel ropes and the connecting steel ropes are detachably connected, and the dry ice and the connecting steel ropes are frozen into a whole.
Has the advantages that: the connecting steel rope and the dry ice are frozen into a whole, so that the connecting steel rope with the dry ice can be directly taken only when the material needs to be extracted, and the operation is convenient.
Furthermore, the traction steel rope passes through the material lifting roller and is driven by the motor to be dragged.
Has the advantages that: the motor drives, can guarantee to carry the at the uniform velocity of material process and rise.
Furthermore, a convex column is arranged on the piston close to one end of the piston rod, and the convex column is abutted against the piston rod and can extend out of the rod cavity.
Has the advantages that: the existence of the convex column enables the piston rod to be completely pushed out of the rod cavity, and the condition that the piston rod is not pushed out completely to prevent the lifting device from rising is avoided.
Furthermore, the machine frame is also provided with a wedge block, and the wedge block is used for pushing the convex column into the closed cavity.
Has the advantages that: when the lifting device rises to the lifting roller, the convex column is pushed into the rod cavity by the wedge block, so that the piston is forced to be away from and the button switch is loosened, the button switch loses the pressing of the piston to cut off the power, the magnetism of the electromagnet disappears, and the film is conveniently pulled by the traction roller.
Further, the air pipe is connected with an air pump.
Has the advantages that: the air pump blows air into the rodless cavity continuously, and the uniformity of the air blown out of the air blowing holes is guaranteed.
Drawings
FIG. 1 is a schematic view of a prior art blow molding of a PE film;
FIG. 2 is a front view of an embodiment of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a top view of a lifting device before the thin-walled tube is sealed according to an embodiment of the present invention;
FIG. 5 is a top view of a lifting device in the lifting process of the thin-walled tube in the embodiment of the invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a frame 1, a right-angle machine head 2, a herringbone plate 3, a traction roller 4, a material lifting device 5, a motor 6, an air pump 7, a material lifting roller 51, a left material lifting block 52, a right material lifting block 53, a piston 54, a rod cavity 55, a rodless cavity 56, a piston rod 8, an air pipe 9, an electromagnet 10, a button switch 11, an iron block 12, a traction steel rope 13, a connecting steel rope 14, dry ice 15, an air blowing channel 57, an air blowing hole 58, a wedge block 16, a thin-wall pipe 17, a thin-film pipe 18, an extruder 19 and a wind-up roller 20.
The embodiment is substantially as shown in fig. 2 to 5:
as shown in figure 2, the blow molding machine for processing PE films comprises a frame 1, a right-angle head 2, a herringbone plate 3, a traction roller 4, a lifting device 5, a motor 6 and an air pump 7.
As shown in fig. 3 to 5, the lifting device 5 comprises a lifting roller 51, a left lifting block 52 and a right lifting block 53 with symmetrical structures, steel cables are respectively connected between the left lifting block 52 and the right lifting block 53 and the lifting roller 51, the left lifting block 52 and the right lifting block 53 are hung above the machine head through the steel cables, and the steel cables are driven by the motor 6 to ascend; closed cavities are formed in the left material lifting block 52 and the right material lifting block 53, a piston 54 is connected in the closed cavities in a sliding mode, the closed cavities are divided into a rod cavity 55 and a rodless cavity 56 by the piston 54, and the rodless cavities 56 of the left material lifting block 52 and the right material lifting block 53 are close to the central axis of the handpiece.
The frame 1 is fixedly connected with a piston rod 8, the piston rod 8 penetrates into a rod cavity 55 and abuts against a piston 54, the sliding direction of the piston 54 is the horizontal direction, air pipes 9 are arranged on the peripheries of the closed containing cavities of the left material lifting block 52 and the right material lifting block 53, one end of each air pipe 9 is communicated with a rodless cavity 56, and the other end of each air pipe 9 is communicated with an air pump 7.
The bottom of a rodless cavity 56 in the left material lifting block 52 is provided with an electromagnet 10, the inner wall close to the bottom of the rod cavity 55 is provided with a button switch 11 for controlling the electromagnet 10 to be electrified, and the bottom of the rodless cavity 56 in the right material lifting block 53 is provided with an iron block 12.
As shown in fig. 2, the steel cords include a traction steel cord 13 and a connecting steel cord 14, the traction steel cord 13 is knotted to the connecting steel cord 14, dry ice 15 is connected to the connecting steel cord 14, and the connecting steel cord 14 and the dry ice 15 are frozen into a whole, and the dry ice 15 is located on the top of the left material block 52 and the right material block 53.
As shown in fig. 3 and 4, a blowing channel 57 is opened on the inner wall near the bottom of the rodless cavity 56, a plurality of blowing holes 58 are provided on the top of the left material lifting block 52 and the right material lifting block 53, and the blowing holes 58 are communicated with the blowing channel 57.
A convex column is arranged on the piston 54 close to one end of the piston rod 8, the convex column is abutted against the piston rod 8 and can extend out of the rod cavity 55, namely the convex column can extend out of the left material lifting block 52 and the right material lifting block 53.
The frame 1 is further provided with a wedge block 16, and the wedge block 16 is used for pushing the convex column into the closed cavity.
The specific implementation process is as follows:
with reference to fig. 2 and 4, in an initial state, the left lifting block 52 and the right lifting block 53 are located on the periphery of the thin-walled tube 17 and are symmetrical along the central axis of the thin-walled tube 17; the electromagnet 10 is powered off, and the piston rod 8 pushes the piston 54 to be close to the bottom of the rodless cavity 56; the dry ice 15 is positioned at the top of the left material lifting block 52 and the right material lifting block 53, the dry ice 15 blocks the air blowing hole 58, the rodless cavity 56 is ensured to be in a closed state before the dry ice 15 is melted, and the opposite surfaces of the two dry ices 15 are respectively parallel to the bottom outer wall of the corresponding left material lifting block 52 or right material lifting block 53.
Sealing materials:
when the PE film needs to be molded, the thin-wall pipe 17 is extruded from the right-angle machine head 2, the extruded thin-wall pipe 17 is extruded by the left lifting block 52 and the right lifting block 53 to form the thin-wall pipe 17 with the top closed, namely, the upper part of the thin-wall pipe 17 is sealed by the opposite movement of the left lifting block 52 and the right lifting block 53.
With reference to fig. 4, in the material sealing process, the air pump 7 is started, the pressure in the rodless cavity 56 is increased through the air pipe 9, the volume in the rodless cavity 56 is increased, and the volume of the rod cavity 55 is decreased, because the piston rod 8 is fixed on the frame 1, the left material lifting block 52 and the right material lifting block 53 approach to the central axis position of the thin-walled tube 17 in the process of decreasing the volume of the rod cavity 55, the dry ice 15 and the material lifting device 5 gradually extrude a section of the upper part of the thin-walled tube 17 in the approaching process, the section of the upper part of the thin-walled tube 17 is extruded and bonded together from an initially open cylinder to gradually form the thin-walled tube 17 with a closed strip-shaped upper end and a cylinder-shaped lower end, and the material lifting device 5 completes mechanical automatic material sealing under the cooperation of the air pump 7.
When the volume in the rodless cavity 56 is increased to the maximum, the piston 54 presses and presses the button switch 11, the electromagnet 10 is electrified to generate magnetic force to attract the iron block 12 on the right material lifting block 53, and the material on the upper part of the thin-wall tube 17 is clamped under the action of the electromagnet 10 and the iron block 12, so that the thin-film tube 18 is prevented from falling due to gravity in the material lifting process.
Material lifting:
referring to fig. 5, when the volume of the rodless cavity 56 is the maximum, the volume of the rod cavity 55 is the minimum, the piston rod 8 is pushed to the outside of the left lifting block 52 and the right lifting block 53, at this time, the motor 6 is started, so that the traction steel rope 13 drives the connecting steel rope 14 to move upwards, in the process of moving upwards, the compressed air blows the lower part of the thin-walled tube 17 to form the thin-film tube 18, and the upper section of the thin-walled tube 17 is clamped by the magnetic force of the electromagnet 10 and the iron block 12, so that the thin-walled tube 17 is lifted upwards by the traction steel rope 13 while blowing to form the lifting process.
In the process, on one hand, the dry ice 15 at the top of the material lifting device extrudes a section of the upper part of the thin-walled tube 17 and thins the thin-walled tube 17, so that the feeding roller of the material lifting device 5 close to the traction roller 4 is prepared for stable embedding; on the other hand, the existence of the dry ice 15 also cools the thin-walled tube 17, and the sealing of the thin-walled tube 17 is accelerated.
Feeding rollers:
during the material lifting process, the dry ice 15 is gradually melted due to contact with a PE material with higher temperature, after the dry ice 15 is melted, the blow hole 58 is exposed, a section of strip-shaped film formed by sealing a section of the upper part of the thin-wall pipe 17 is also exposed, wind is blown out from the blow hole 58 and acts on the exposed strip-shaped film, under the action of the symmetrical wind force, the strip-shaped film is kept in an upright state, when the strip-shaped film reaches the traction rollers 4, the strip-shaped film is directly pulled by the two traction rollers 4, the convex column on the piston 54 moves towards one side of the rodless cavity 56 under the pushing action of the wedge block 16, the piston 54 gradually loosens the pressed button switch 11 in the moving process, when the button switch 11 loses the pressing action of the piston 54, the electromagnet 10 is powered off, the magnetic force for pressing the film disappears, the film is ensured to be more smoothly pulled by the traction rollers 4, and the.
The processes from material sealing, material lifting and final roller feeding are automatically completed by machinery, manual operation is replaced, and the possibility of danger caused by manual operation is avoided.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that variations and modifications can be made by those skilled in the art without departing from the structure of the present invention. These should also be construed as the scope of the present invention, and they should not be construed as affecting the effectiveness of the practice of the present invention or the applicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
- The blow molding machine for processing the PE film comprises a rack, a machine head, a herringbone plate and a traction roller, and is characterized by further comprising a material lifting device, wherein the material lifting device comprises a material lifting roller, a left material lifting block and a right material lifting block which are symmetrical in structure, the left material lifting block and the right material lifting block are respectively connected with the material lifting roller through a traction rope, the left material lifting block and the right material lifting block are hung above the machine head through the traction rope, closed containing cavities are respectively arranged in the left material lifting block and the right material lifting block, pistons are connected in the closed containing cavities in a sliding mode, the closed containing cavities are divided into rod cavities and rodless cavities by the pistons, and the rodless cavities of the left material lifting block and the right material lifting block are close to the central axis of the machine head; the frame is fixedly connected with a piston rod, the piston rod penetrates into a rod cavity and abuts against a piston, the sliding direction of the piston is vertical to the central axis of the traction roller, air pipes are arranged in the peripheries of the closed containing cavities of the left material extracting block and the right material extracting block, and the air pipes are communicated with the rodless cavity; the rod cavity and the rodless cavity are of a left-right separation structure, and the material sealing of the upper part of the thin-walled tube is realized after the left material lifting block and the right material lifting block move oppositely.
- 2. The blow molding machine for processing a PE film according to claim 1, wherein: the bottom of the rodless cavity in the left material extracting block is provided with an electromagnet, the inner wall close to the bottom of the rod cavity is provided with a button switch for controlling the electromagnet to be electrified, and the bottom of the rodless cavity in the right material extracting block is provided with a ferromagnetic block with ferromagnetic property.
- 3. The blow molding machine for processing a PE film according to claim 2, wherein: the traction rope is connected with dry ice which is positioned on the tops of the left material extracting block and the right material extracting block.
- 4. The blow molding machine for processing a PE film according to claim 3, wherein: the inner wall close to the bottom of the rodless cavity is provided with a blowing channel, the tops of the left material lifting block and the right material lifting block are provided with a plurality of blowing holes, and the blowing holes are communicated with the blowing channel.
- 5. The blow molding machine for processing a PE film according to claim 4, wherein: the hauling rope is a steel rope.
- 6. The blow molding machine for processing a PE film according to claim 5, wherein: the steel ropes comprise traction steel ropes and connecting steel ropes, the traction steel ropes are detachably connected with the connecting steel ropes, and the dry ice and the connecting steel ropes are frozen into a whole.
- 7. The blow molding machine for processing a PE film according to claim 6, wherein: the traction steel rope passes through the material lifting roller and is driven by the motor to be dragged.
- 8. The blow molding machine for processing a PE film according to claim 7, wherein: the piston close to one end of the piston rod is provided with a convex column which is pressed against the piston rod and can extend out of the rod cavity.
- 9. The blow molding machine for processing a PE film according to claim 8, wherein: the machine frame is further provided with a wedge block, and the wedge block is used for pushing the convex column into the closed cavity.
- 10. A blowing machine for PE film processing according to any one of claims 1 to 9, characterized in that: the air pipe is connected with an air pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811378029.8A CN109263030B (en) | 2018-11-19 | 2018-11-19 | Blow molding machine for processing PE film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811378029.8A CN109263030B (en) | 2018-11-19 | 2018-11-19 | Blow molding machine for processing PE film |
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| Publication Number | Publication Date |
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| CN109263030A CN109263030A (en) | 2019-01-25 |
| CN109263030B true CN109263030B (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811378029.8A Active CN109263030B (en) | 2018-11-19 | 2018-11-19 | Blow molding machine for processing PE film |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110053243B (en) * | 2019-05-31 | 2021-05-28 | 重庆瑞霆塑胶有限公司 | Blow molding machine head |
| CN110936594A (en) * | 2019-12-05 | 2020-03-31 | 黄海山 | Blow molding machine for processing PE (polyethylene) film |
| CN110978476A (en) * | 2019-12-26 | 2020-04-10 | 陈铭军 | Plastic film blow molding preparation method |
| CN111590857A (en) * | 2020-05-30 | 2020-08-28 | 侯哲宇 | Production process of preservative film |
| CN115179533A (en) * | 2022-07-23 | 2022-10-14 | 王伟俊 | PVC film blowing machine |
| CN119238935A (en) * | 2024-09-03 | 2025-01-03 | 无锡灵鸽智能化科技有限公司 | A multi-layer co-extrusion film production line with automatic batching |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4062916A (en) * | 1973-09-17 | 1977-12-13 | Imperial Chemical Industries Limited | Production of tubular film |
| CN2598740Y (en) * | 2003-03-03 | 2004-01-14 | 马镇鑫 | New type blow moulding machine for producing internal cleaning type plastic sleeve film |
| CN204251019U (en) * | 2014-10-29 | 2015-04-08 | 常州绿之源高分子材料有限公司 | PVA film blow molding machine |
-
2018
- 2018-11-19 CN CN201811378029.8A patent/CN109263030B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4062916A (en) * | 1973-09-17 | 1977-12-13 | Imperial Chemical Industries Limited | Production of tubular film |
| CN2598740Y (en) * | 2003-03-03 | 2004-01-14 | 马镇鑫 | New type blow moulding machine for producing internal cleaning type plastic sleeve film |
| CN204251019U (en) * | 2014-10-29 | 2015-04-08 | 常州绿之源高分子材料有限公司 | PVA film blow molding machine |
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